Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Current Assets
Cash and cash equivalents	$ 80,900	$ 44,706
Short-term investments	27,944	23,266
Trade accounts receivable, less allowance of $6,591 and $5,324	368,377	307,350
Other receivables, including advances to independent contractors, less allowance of $5,384 and $5,511	53,263	23,943
Deferred income taxes and other current assets	21,308	21,652
Total current assets	551,792	420,917
Operating property, less accumulated depreciation and amortization of $145,804 and $137,830	142,146	132,649
Goodwill	57,470	57,470
Other assets	57,041	72,846
Total assets	808,449	683,882
Current Liabilities
Cash overdraft	25,905	24,877
Accounts payable	163,307	137,297
Current maturities of long-term debt	17,212	22,172
Insurance claims	76,624	40,215
Other current liabilities	48,065	53,785
Total current liabilities	331,113	278,346
Long-term debt, excluding current maturities	115,130	99,439
Insurance claims	27,494	31,468
Deferred income taxes	34,135	23,662
Equity Landstar System, Inc. and subsidiary shareholders' equity:
Common stock, $0.01 par value, authorized 160,000,000 shares, issued 66,602,486 and 66,535,169 shares	666	665
Additional paid-in capital	165,712	169,268
Retained earnings	947,156	844,132
Cost of 19,882,289 and 18,674,902 shares of common stock in treasury	(813,684)	(763,182)
Accumulated other comprehensive income	727	881
Total Landstar System, Inc. and subsidiary shareholders' equity	300,577	251,764
Noncontrolling interest		(797)
Total equity	300,577	250,967
Total liabilities and equity	$ 808,449	$ 683,882